Carrier-induced changes in the phase resolved reflection of GaAs quantum wells Ch. Nacke, H. Stolz, G. Manzke and K. Henneberger Eur. Phys. J. B, 30 3 (2002) 303-312 Published online: 19 December 2002 DOI: 10.1140/epjb/e2002-00383-6